Martin Sheen President Josiah "Jed" Bartlet Actor Stockard Channing Abigail "Abbey" Bartlet Actor John Spencer Chief of Staff Leo McGarry Actor Bradley Whitford Dep. Chief of Staff Josh Lyman Actor Allison Janney Press Secretary Claudia Jean "C.J." Cregg Actor Richard Schiff Communications Dir. Toby Ziegler Actor Dulé Hill Charlie Young Actor Janel Moloney Donna Moss Actor Joshua Malina Will Bailey Actor Mary McCormack Kate Harper Actor NiCole Robinson Margaret Guest Star Lily Tomlin Deborah Fiderer Guest Star Ryan Cutrona CIA Director George Rollie Guest Star Mark Feuerstein Clifford Calley Guest Star Brian Dennehy Sen. Rafe Framingham Guest Star Scott MacDonald Cyrus Yolander Guest Star Alex Fernandez Andy Lazon Guest Star P.J. Byrne David Orbitz Guest Star Kevin West Randy Wysniewsky Guest Star Jimmy Smits Matthew Santos Guest Star Gary Cole Vice President Bob Russell Guest Star Kris Murphy Katie Witt Guest Star Rob Lowe Sam Seaborn Actor John Wells Executive Producer